Sault Ste. Marie, Mich., the locks and power house, Title from jacket., "G 2241" on negative., Detroit Publishing Co. no. 33735., Gift; State Historical Society of Colorado; 1949, Power plants. , Locks (Hydraulic engineering) , United States, Michigan, Sault Sainte Marie. , United States, Michigan, Sault Sainte Marie Canal.


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Keywords: ., locks, plants., power, states-, united